A car needs a television like a fish needs a bicycle. That said... In days of yore, vehicles had lots of viewable area when you turned your head to back up. Today? Much less so. I had the pleasure of driving my Grandfather's '61 Chevrolet Impala, and if you could turn your head there wasn't a millimeter of blind spot on it. Pretty confident the top of the car would've pancaked in a rollover, but it was a bright and visible vehicle to drive. Most vehicles today present a rear view akin to a cave or tunnel - even trucks and large SUVs. I'll admit I find backup cameras handy.